en roughing pump (n)
― RelatedTo ⟶
Weight: 1.0
en rough vacuum Source: English Wiktionary
en roughing pump (n)
― RelatedTo ⟶
Weight: 1.0
en vacuum pump Source: English Wiktionary
en roughing pump (n)
― RelatedTo ⟶
Weight: 1.0
en atmospheric Source: English Wiktionary